properties/editor: edit the compress option instead of comp-lzo

If comp-lzo is present, set an equivalent compress option in vpn.data
instead.

Even if the user is using the OpenVPN 2.3 or older, the service will
make an effort to set the equivalent --comp-lzo option if possible.
2 jobs for lr/compress-option in 4 minutes and 47 seconds (queued for 6 seconds)
latest
Status Job ID Name Coverage
  Build
passed #62947
fedora28_dist

00:02:35

 
  Test
passed #62948
fedora_from_dist

00:02:12